<HTML>
<BODY BGCOLOR="white">
<PRE>
<FONT color="green">001</FONT>    /*<a name="line.1"></a>
<FONT color="green">002</FONT>     * Copyright 2007 the original author or authors.<a name="line.2"></a>
<FONT color="green">003</FONT>     *<a name="line.3"></a>
<FONT color="green">004</FONT>     * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<FONT color="green">005</FONT>     * you may not use this file except in compliance with the License.<a name="line.5"></a>
<FONT color="green">006</FONT>     * You may obtain a copy of the License at<a name="line.6"></a>
<FONT color="green">007</FONT>     *<a name="line.7"></a>
<FONT color="green">008</FONT>     *      http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<FONT color="green">009</FONT>     *<a name="line.9"></a>
<FONT color="green">010</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<FONT color="green">011</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<FONT color="green">012</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<FONT color="green">013</FONT>     * See the License for the specific language governing permissions and<a name="line.13"></a>
<FONT color="green">014</FONT>     * limitations under the License.<a name="line.14"></a>
<FONT color="green">015</FONT>     */<a name="line.15"></a>
<FONT color="green">016</FONT>    package org.codehaus.groovy.grails.plugins.searchable.compass.search;<a name="line.16"></a>
<FONT color="green">017</FONT>    <a name="line.17"></a>
<FONT color="green">018</FONT>    import org.compass.core.CompassQuery;<a name="line.18"></a>
<FONT color="green">019</FONT>    import org.compass.core.Compass;<a name="line.19"></a>
<FONT color="green">020</FONT>    import org.compass.core.CompassSession;<a name="line.20"></a>
<FONT color="green">021</FONT>    import org.springframework.util.Assert;<a name="line.21"></a>
<FONT color="green">022</FONT>    import org.codehaus.groovy.grails.commons.GrailsApplication;<a name="line.22"></a>
<FONT color="green">023</FONT>    <a name="line.23"></a>
<FONT color="green">024</FONT>    import java.util.Map;<a name="line.24"></a>
<FONT color="green">025</FONT>    import java.util.List;<a name="line.25"></a>
<FONT color="green">026</FONT>    import java.util.Arrays;<a name="line.26"></a>
<FONT color="green">027</FONT>    <a name="line.27"></a>
<FONT color="green">028</FONT>    /**<a name="line.28"></a>
<FONT color="green">029</FONT>     * Post-processes a query to add sort<a name="line.29"></a>
<FONT color="green">030</FONT>     *<a name="line.30"></a>
<FONT color="green">031</FONT>     * @author Maurice Nicholson<a name="line.31"></a>
<FONT color="green">032</FONT>     */<a name="line.32"></a>
<FONT color="green">033</FONT>    public class SearchableCompassQueryBuilderSortOptionHelper implements SearchableCompassQueryBuilderOptionsHelper {<a name="line.33"></a>
<FONT color="green">034</FONT>        public static final String DIRECTION = "direction";<a name="line.34"></a>
<FONT color="green">035</FONT>        public static final String ORDER = "order";<a name="line.35"></a>
<FONT color="green">036</FONT>        public static final List VALID_SORT_DIRECTION_VALUES = Arrays.asList(new String[] { "asc", "desc", "auto", "reverse" });<a name="line.36"></a>
<FONT color="green">037</FONT>    <a name="line.37"></a>
<FONT color="green">038</FONT>        public CompassQuery applyOptions(GrailsApplication grailsApplication, Compass compass, CompassSession compassSession, CompassQuery compassQuery, Map options) {<a name="line.38"></a>
<FONT color="green">039</FONT>            return addSort(compassQuery, options);<a name="line.39"></a>
<FONT color="green">040</FONT>        }<a name="line.40"></a>
<FONT color="green">041</FONT>    <a name="line.41"></a>
<FONT color="green">042</FONT>        public CompassQuery addSort(CompassQuery compassQuery, Map options) {<a name="line.42"></a>
<FONT color="green">043</FONT>            String sort = (String) options.get("sort");<a name="line.43"></a>
<FONT color="green">044</FONT>            if (sort == null) {<a name="line.44"></a>
<FONT color="green">045</FONT>                return compassQuery;<a name="line.45"></a>
<FONT color="green">046</FONT>            }<a name="line.46"></a>
<FONT color="green">047</FONT>            Object sortProperty = getSortProperty(sort);<a name="line.47"></a>
<FONT color="green">048</FONT>            CompassQuery.SortDirection direction = getSortDirection(sortProperty, options);<a name="line.48"></a>
<FONT color="green">049</FONT>    <a name="line.49"></a>
<FONT color="green">050</FONT>            if (sortProperty instanceof CompassQuery.SortImplicitType) {<a name="line.50"></a>
<FONT color="green">051</FONT>                compassQuery = compassQuery.addSort((CompassQuery.SortImplicitType) sortProperty, direction);<a name="line.51"></a>
<FONT color="green">052</FONT>            } else {<a name="line.52"></a>
<FONT color="green">053</FONT>                Assert.isInstanceOf(String.class, sortProperty, "Expected string");<a name="line.53"></a>
<FONT color="green">054</FONT>                compassQuery = compassQuery.addSort((String) sortProperty, direction);<a name="line.54"></a>
<FONT color="green">055</FONT>            }<a name="line.55"></a>
<FONT color="green">056</FONT>            return compassQuery;<a name="line.56"></a>
<FONT color="green">057</FONT>        }<a name="line.57"></a>
<FONT color="green">058</FONT>    <a name="line.58"></a>
<FONT color="green">059</FONT>        private Object getSortProperty(String sort) {<a name="line.59"></a>
<FONT color="green">060</FONT>            Assert.notNull(sort, "sort cannot be null");<a name="line.60"></a>
<FONT color="green">061</FONT>            if (sort.equals("SCORE")) {<a name="line.61"></a>
<FONT color="green">062</FONT>                return CompassQuery.SortImplicitType.SCORE;<a name="line.62"></a>
<FONT color="green">063</FONT>            }<a name="line.63"></a>
<FONT color="green">064</FONT>            return sort;<a name="line.64"></a>
<FONT color="green">065</FONT>        }<a name="line.65"></a>
<FONT color="green">066</FONT>    <a name="line.66"></a>
<FONT color="green">067</FONT>        /**<a name="line.67"></a>
<FONT color="green">068</FONT>         * Get the CompassQuery.SortDirection for the given property and optional order/direction Map entry<a name="line.68"></a>
<FONT color="green">069</FONT>         * @param property either CompassQuery.SortImplicitType.SCORE or a class property name (String)<a name="line.69"></a>
<FONT color="green">070</FONT>         * @param options a Map containg<a name="line.70"></a>
<FONT color="green">071</FONT>         * @return<a name="line.71"></a>
<FONT color="green">072</FONT>         */<a name="line.72"></a>
<FONT color="green">073</FONT>        public CompassQuery.SortDirection getSortDirection(Object property, Map options) {<a name="line.73"></a>
<FONT color="green">074</FONT>            Assert.notNull(property, "sort property cannot be null");<a name="line.74"></a>
<FONT color="green">075</FONT>            Assert.notNull(options, "options Map cannot be null");<a name="line.75"></a>
<FONT color="green">076</FONT>            if (!options.containsKey(ORDER) &amp;&amp; !options.containsKey(DIRECTION)) {<a name="line.76"></a>
<FONT color="green">077</FONT>                return CompassQuery.SortDirection.AUTO;<a name="line.77"></a>
<FONT color="green">078</FONT>            }<a name="line.78"></a>
<FONT color="green">079</FONT>    <a name="line.79"></a>
<FONT color="green">080</FONT>            Assert.isTrue((options.containsKey(ORDER) &amp;&amp; !options.containsKey(DIRECTION)) || (!options.containsKey(ORDER) &amp;&amp; options.containsKey(DIRECTION)), "Either specify a sort '" + ORDER + "' or '" + DIRECTION + "' or neither but not both");<a name="line.80"></a>
<FONT color="green">081</FONT>            String value = (String) options.get(DIRECTION);<a name="line.81"></a>
<FONT color="green">082</FONT>            if (value == null) {<a name="line.82"></a>
<FONT color="green">083</FONT>                value = (String) options.get(ORDER);<a name="line.83"></a>
<FONT color="green">084</FONT>            }<a name="line.84"></a>
<FONT color="green">085</FONT>            Assert.isTrue(VALID_SORT_DIRECTION_VALUES.contains(value), "The sort order/direction '" + value + "' is not a valid value");<a name="line.85"></a>
<FONT color="green">086</FONT>            return property.equals(CompassQuery.SortImplicitType.SCORE) ?<a name="line.86"></a>
<FONT color="green">087</FONT>                    value.equals("asc") || value.equals("reverse") ? CompassQuery.SortDirection.REVERSE : CompassQuery.SortDirection.AUTO :<a name="line.87"></a>
<FONT color="green">088</FONT>                    value.equals("asc") || value.equals("auto") ? CompassQuery.SortDirection.AUTO : CompassQuery.SortDirection.REVERSE;<a name="line.88"></a>
<FONT color="green">089</FONT>        }<a name="line.89"></a>
<FONT color="green">090</FONT>    }<a name="line.90"></a>




























































</PRE>
</BODY>
</HTML>
